Barbell lock



FIG. 1 is a top plan view of a barbell lock showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a side elevational view taken 90° from the view of FIG. 2;

FIG. 4 is a side elevational view taken from the side opposite to that of FIG. 2;

FIG. 5 is a side elevational view taken from the side opposite to that of FIG. 3; and

FIG. 6 is a bottom plan view. 

The ornamental design for a barbell lock, as shown and described. 